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Impregnation treatment method for formaldehyde-free flexible impregnated veneer

A technology of impregnation treatment and aldehyde flexibility, which is applied in the field of impregnation treatment of aldehyde-free flexible impregnated veneer, can solve the problems of damage to veneer decorative veneer materials, difficult traces of single-sided tape paper, and increased operation difficulty, so as to achieve easy operation and improved appearance. quality, the effect of eliminating stitching gaps

Active Publication Date: 2020-11-24
JIANGSU LODGI WOODS IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) After impregnated with melamine resin and dried, the veneer will become brittle, and the veneer decorative veneer material is prone to damage during the hot-pressing lamination process, transfer process, or storage process, and because the veneer decorative veneer material is relatively brittle , while increasing the difficulty of operation of the aforementioned processes;
[0004] (2) The veneer decorative veneer material prepared by impregnating melamine resin and drying has the problem of free formaldehyde release;
[0005] (3) When using single-sided tape paper to make the veneer pieces long and wide, the splicing is not tight, and there will be obvious splicing gaps at the splicing place, and the traces of single-sided tape paper are difficult to remove effectively

Method used

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  • Impregnation treatment method for formaldehyde-free flexible impregnated veneer
  • Impregnation treatment method for formaldehyde-free flexible impregnated veneer

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Example 1: An impregnation treatment method for formaldehyde-free flexible impregnated veneers, which sequentially includes the steps of veneer softening, surface roughening, lengthening and widening, impregnation treatment, and cold pressing for shaping , the step of drying treatment, the step of winding. The specification of the processing veneer is 900mm (length) × 200mm (width) × 0.4mm (thickness).

[0039] 1. The veneer softening step is to immerse the veneer in a softener. The softener used can be any one in the prior art, such as polyvinyl alcohol, glacial acetic acid, penetrating agent, deionized water, etc. Wood softener; the softening process adopted can be any process in the prior art, such as soaking the veneer to be softened in the softener at normal temperature and pressure for 4 to 5 hours, or at 50 to 60 Soak in a softener for 1-3 hours at ℃ and normal pressure; dry the softened veneer until the moisture content is lower than 20%.

[0040] 2. The step ...

Embodiment 2

[0046] Embodiment 2: the difference between embodiment 2 and embodiment 1 is:

[0047] In the step of softening the veneer, the veneer after the softening treatment is not dried, but directly enters the step of surface roughening treatment.

[0048] In the step of surface roughening treatment, the veneer after moisture content drying is sequentially passed through one 0.5mm Dupont wire drawing, one 1.0mm Dupont wire drawing and two 0.3mm steel wire drawing to form a fiber layer on the surface of the veneer , The fiber filament length of the fiber filament layer is 2.0-2.2mm.

[0049] In the steps of joining lengths and joining widths, the length loss at joining lengths is 0 mm, and the width loss at joining widths is 0 mm. That is, in this embodiment, materials are overlapped at non-joining lengths and joining widths.

[0050] In the step of dipping treatment, the veneer is dipped in any water-based acrylic resin in the prior art under normal temperature and normal pressure c...

Embodiment 3

[0051] Embodiment 3: the difference between embodiment 3 and embodiment 1 is:

[0052] The specification of the processing veneer is 900mm (length) × 200mm (width) × 0.6mm (thickness).

[0053] In the step of veneer softening, the softened veneer is dried to a moisture content of 25-50%, specifically, the softened veneer is dried to a moisture content of 30±2%.

[0054] In the step of connecting length and combining width, the length loss at the connecting length is 0-8mm (specifically 2mm), and the width loss at the jointing width is 0-4mm (specifically 1mm); in this step, two adjacent The joint lengths of the boards overlap by 1 mm, so the length loss at the joint length is 2 mm, and the joint widths of two adjacent boards overlap by 0.5 mm, so the width loss at the joint width is 1 mm.

[0055] In the step of surface roughening treatment, the veneer after moisture content drying is sequentially passed through one 0.5mm Dupont wire drawing, one 1.0mm Dupont wire drawing and...

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Abstract

The invention discloses an impregnation treatment method for a formaldehyde-free flexible impregnated veneer. The method sequentially comprises the steps of veneer softening, surface roughening treatment, lengthening and widening, impregnation treatment, cold pressing shaping, drying treatment and winding. In the step of surface roughening treatment, a fiber yarn layer is formed on the surface ofthe softened veneer through wire drawing treatment; and in the step of impregnation treatment, an impregnation agent is water-based acrylic resin. According to the method, the impregnated veneer has relative flexibility and is not easy to damage, so that the operation of a hot-pressing compounding process, a transferring process or a storage process is relatively easy; a prepared veneer decorativefacing material does not release free formaldehyde and is safe and environment-friendly; and splicing gaps between adjacent veneers can be faded or even eliminated, so that the appearance quality ofthe prepared veneer decorative facing material is improved.

Description

technical field [0001] The present application relates to the technical field of wooden floor manufacturing methods, in particular to a method for impregnating formaldehyde-free flexible impregnated veneers. Background technique [0002] Veneer decorative veneer material is a widely used veneer material. The traditional production method of veneer decorative veneer materials is to use single-sided adhesive tape to connect several pieces of veneer (or veneer) to initially make the veneers lengthened and widened to form a continuous veneer, and then impregnated in melamine resin. After drying, hot pressing and compounding on the substrate, sand off the single-sided adhesive tape by sanding. In this production method, there are at least three problems: [0003] (1) After impregnated with melamine resin and dried, the veneer will become brittle, and the veneer decorative veneer material is prone to damage during the hot-pressing lamination process, transfer process, or storage...

Claims

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Application Information

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IPC IPC(8): B27K3/52B27K5/06B27M1/00B27D1/10B27M1/02
CPCB27D1/10B27K3/52B27K5/06B27M1/003B27M1/02
Inventor 陆斌贾翀阮丽丽
Owner JIANGSU LODGI WOODS IND CO LTD
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